Home / 134,923.94-186,211.45-78,335.31

Finding the Fourth Proportional to 134,923.94, 186,211.45 and 78,335.31

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Solution

The fourth proportional to 134,923.94, 186,211.45 and 78,335.31 is: 108,112.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,923.94 : 186,211.45 = 78,335.31 : x
  2. Step 2: Convert to fraction form
    134,923.94/186,211.45 = 78,335.31/x
  3. Step 3: Cross multiply
    134,923.94x = 186,211.45 × 78,335.31
  4. Step 4: Simplify right side
    134,923.94x = 14,586,931,661.30
  5. Step 5: Solve for x
    x = 14,586,931,661.30/134,923.94
  6. Step 6: Final answer
    x = 108,112.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.